Re: [Bugme-new] [Bug 6745] New: kernel hangs when trying to read atip wiith cdrecord

[Joerg Schilling <schilling@fokus.fraunhofer.de>]

Joerg Schilling <schilling@fokus.fraunhofer.de> wrote:

> I am not sure if the log from the OP includes all information.
>
> I've seen already messages like this:
>
> cdrecord: Input/output error. Cannot set SG_SET_TIMEOUT.
>
> This should be something that I would never to expect to happen.
>
> If the OP does not see a similar message, it seems that the call is
> accepted but later ignored. I have no idea why this happens.

Let me add some notes:

Some drives do not support (or correctly support) the 'read buffer' command.
As I don't have all drives, I cannot tell how the drive from the OP behaves on
Solaris. All drives I've seen so far return an error on Solaris - not a timeout,
so it is not clear, whether the hang on Linux would result in a timeout on Solaris.

It may be that the /dev/hd* interface ignores timeouts, but it may also be that
the bus situation did cause a kernel hang. As my experience shows that all 
drives behave always the same, it should be simple to trace the problem for the 
owner of a drive.

Jörg

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